I'm undertaking a bit of work looking at a Background Gamma Spectrum. On the spectrum, I have a clear, tall line at 834 KeV. I have a PDF file of a table of Gamma Spectra (ordered in energy) from Natural Radionuclides. If I look for 834 KeV in the list, it gives me Germanium 72, at this energy level. If I now look across at the "Intensity" column, unlike the vast majority of other Nuclides, the table simply gives a double dash. The decay mode is given as Neutron - Neutron & Gamma. My question essentially is why is no intensity given? Is there a specific reason which I'm missing? It's a similar case for other places in the table with Neutron Capture involved.
Many thanks, hope this is clear enough.